Observables for model-independent detections of Z' boson at the ILC

2014/02/05 by V. Skalozub, Skalozub, V., I. Kucher +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1402.1187

21 pages, 3 tables, 2 PostScript figures

arxiv created 2014/12/05 · arxiv updated 2014/12/08

Abstract

The integral observables for model-independent detections of Abelian Z' gauge boson in e⁺ e^- -> mu⁺ mu^- (tau⁺ τ^-) process with unpolarized beams at the ILC energies are proposed. They are based on the differential cross-section of deviations from the standard model predictions calculated with a low energy effective Lagrangian and taking into consideration the relations between the Z' couplings to the fermions derived already. Due to these relations, the cross-section exhibits angular distribution giving a possibility for introducing one- or two parameter observables which effectively fit the mass m_Z', the axial-vector (a_Z)'² and the product of vector couplings v_e v_mu (v_e v_tau). Comparison with other results and approaches is given.

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